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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Renesas RD8.2S(0)-T1-AT

Name: RD8.2S(0)-T1-AT
Brand: Renesas
SKU: RD8.2S(0)-T1-AT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RD8.2S(0)-T1-AT

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: RD8.2S(0)-T1-AT.pdf

Description:: DIODE ZENER 2-SUPER MINI MOLD

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Inventory:135,000

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Product details

Overview

RD8.2S(0)-T1-AT from Renesas Electronics is a 200 mW, 8.2 V Zener diode in Super Mini Mold (SMD) package, designed for precision voltage regulation and surge suppression in low-power analog circuits. It delivers sharp breakdown at 7.73–8.67 V with dynamic impedance ≤30 Ω at 5 mA, reverse current ≤2 μA at 5.0 V, and operates across –55°C to +150°C junction temperature range.

For engineers reviewing the RD8.2S(0)-T1-AT datasheet, RD8.2S(0)-T1-AT pinout, RD8.2S(0)-T1-AT application, or RD8.2S(0)-T1-AT equivalent, this page provides verified electrical specs, thermal behavior, package dimensions, real-world use cases, and validated alternative parts for voltage reference and transient protection design.

Technical Context

This Zener diode operates in reverse-biased breakdown mode with tightly controlled V_Z tolerance (±5.2% typical for B-class), tested using 40 ms pulsed current. Its low dynamic impedance (30 Ω max at I_Z = 5 mA) ensures stable regulation under varying load conditions.

The device supports non-repetitive surge power up to 85 W for 10 μs pulses and exhibits a negative temperature coefficient of approximately –0.03 %/°C near 8.2 V, enabling predictable drift compensation in reference designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	7.73–8.67 V at I_Z = 5 mA - defines nominal regulation point with ±5.2% spread for B-class grading.
Dynamic Impedance (Z_Z)	≤30 Ω at I_Z = 5 mA - ensures minimal output voltage variation under small-signal load changes.
Reverse Current (I_R)	≤2 μA at V_R = 5.0 V - guarantees low leakage in standby or high-impedance bias networks.
Power Dissipation (P)	200 mW at T_A = 25°C - sets maximum continuous DC power handling on standard PCB layout.
Surge Power (P_RSM)	85 W at t = 10 μs (single pulse) - enables transient overvoltage clamping without failure.
Junction Temperature (T_j)	–55°C to +150°C - supports operation in industrial and automotive under-hood environments.
Package Type	2-pin Super Mini Mold (SMD) - 2.5 × 1.7 mm footprint with cathode marking, optimized for automated assembly.

Pinout & Package

RD8.2S(0)-T1-AT uses a 2-pin surface-mount Super Mini Mold package (JEDEC TO-236AA equivalent). Cathode is marked by a band on the body end; anode is unmarked. No internal terminals beyond anode/cathode.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / reference ground node	Connected to lower-potential side in Zener regulation; forms return path for bias current.
Cathode	Reverse breakdown terminal / regulated output node	Provides stable 8.2 V reference when reverse-biased; polarity must be observed in PCB layout.

Key Features

Feature	Design Value
Sharp breakdown characteristic	Low knee voltage curvature enables precise threshold detection in clamp and reference circuits.
V_Z graded per E24 standard	Ensures compatibility with common resistor ladder networks and legacy analog designs.
200 mW rated power in SMD package	Enables compact placement on dense PCBs without heatsinking for low-duty-cycle applications.
Cathode-indicated polarity	Eliminates orientation errors during pick-and-place; reduces rework in high-volume manufacturing.

Applications

Reference Voltage Source	Overvoltage Clamp
Use Scenario: Providing stable 8.2 V bias for op-amp comparators and ADC reference dividers in sensor signal conditioning modules. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, absorbing excess current to maintain fixed potential at feedback node. Use Value: Delivers <±1% regulation stability over 0–5 mA load range due to 30 Ω dynamic impedance and low temperature coefficient.	Use Scenario: Protecting microcontroller I/O pins from ESD and inductive kickback in motor driver interface boards. IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts above 8.67 V to divert transient energy to ground. Use Value: Withstands 85 W surges for 10 μs without degradation, meeting IEC 61000-4-2 Level 3 requirements.
Waveform Clipper	Constant Current Sink
Use Scenario: Limiting audio signal peaks in line-level preamplifier outputs to prevent distortion in downstream stages. IC Role / Device Role / Timing Role: Bidirectional clipping element (with series diode) that clips positive excursions at ~8.9 V. Use Value: Sharp knee and low ZZ minimize harmonic generation compared to generic silicon diodes.	Use Scenario: Setting precise 5 mA bias current for phototransistor amplifiers in optical isolation circuits. IC Role / Device Role / Timing Role: Zener + series resistor forms simple two-terminal constant-current source. Use Value: Maintains 5.0 mA within ±3% over 5–15 V supply range due to tight V_Z tolerance and low IR.

Reference Voltage Source

Overvoltage Clamp

Use Scenario: Providing stable 8.2 V bias for op-amp comparators and ADC reference dividers in sensor signal conditioning modules.

IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, absorbing excess current to maintain fixed potential at feedback node.

Use Value: Delivers <±1% regulation stability over 0–5 mA load range due to 30 Ω dynamic impedance and low temperature coefficient.

Use Scenario: Protecting microcontroller I/O pins from ESD and inductive kickback in motor driver interface boards.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts above 8.67 V to divert transient energy to ground.

Use Value: Withstands 85 W surges for 10 μs without degradation, meeting IEC 61000-4-2 Level 3 requirements.

Waveform Clipper

Constant Current Sink

Use Scenario: Limiting audio signal peaks in line-level preamplifier outputs to prevent distortion in downstream stages.

IC Role / Device Role / Timing Role: Bidirectional clipping element (with series diode) that clips positive excursions at ~8.9 V.

Use Value: Sharp knee and low ZZ minimize harmonic generation compared to generic silicon diodes.

Use Scenario: Setting precise 5 mA bias current for phototransistor amplifiers in optical isolation circuits.

IC Role / Device Role / Timing Role: Zener + series resistor forms simple two-terminal constant-current source.

Use Value: Maintains 5.0 mA within ±3% over 5–15 V supply range due to tight V_Z tolerance and low IR.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4738A-T	8.2 V, 1 W rating, DO-41 through-hole package, 15 Ω Z_Z, ±5% tolerance	Higher power handling but larger footprint; unsuitable for space-constrained SMD layouts	Select when board-level surge energy exceeds 85 W or thermal mass requires through-hole mounting.
BZX55-C8V2	8.2 V, 500 mW, DO-35 glass package, 35 Ω Z_Z, ±5% tolerance, higher leakage (≤5 μA)	Lower cost but less stable regulation and inferior thermal performance in reflow environments	Prefer for cost-sensitive consumer products where 200 mW derating and 2 μA leakage are non-critical.

Compared with RD8.2S(0)-T1-AT, the 1N4738A-T offers higher surge robustness but sacrifices miniaturization, while the BZX55-C8V2 trades regulation precision and leakage performance for lower unit cost-making RD8.2S(0)-T1-AT optimal for space-constrained, low-leakage industrial reference designs.

Availability

RD8.2S(0)-T1-AT is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and waveform shaping applications requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.

Supply support for RD8.2S(0)-T1-AT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader formed in 2010 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The RD2.0S to RD150S series was developed for general-purpose voltage regulation and transient suppression in Standard-grade applications including office equipment, industrial controls, and consumer electronics.

FAQ

What is the exact Zener voltage range for RD8.2S(0)-T1-AT at 5 mA test current?

The RD8.2S(0)-T1-AT has a guaranteed Zener voltage range of 7.73 V (minimum) to 8.67 V (maximum) when tested at I_Z = 5 mA per the Renesas D11444EJ6V0DS datasheet. This corresponds to B-class grading with ±5.2% tolerance around the nominal 8.2 V rating, and applies specifically to the RD8.2S variant within the RD2.0S–RD150S family.

Does RD8.2S(0)-T1-AT support reflow soldering, and what is its maximum peak temperature rating?

Yes, RD8.2S(0)-T1-AT is qualified for lead-free reflow soldering per J-STD-020. Its Super Mini Mold package withstands peak temperatures up to 260°C for 10 seconds. The device's 150°C maximum junction temperature and thermal resistance characteristics ensure reliability when mounted on standard FR-4 PCBs with recommended pad layout per Renesas package drawing.

What is the reverse leakage current specification for RD8.2S(0)-T1-AT, and at what voltage is it measured?

The RD8.2S(0)-T1-AT specifies a maximum reverse leakage current (I_R) of 2 μA, measured at V_R = 5.0 V and T_A = 25°C. This low leakage supports high-impedance bias networks and precision reference applications where current draw must remain below microampere thresholds.

Can RD8.2S(0)-T1-AT be used as a direct replacement for older NEC RD8.2S parts?

Yes, RD8.2S(0)-T1-AT is the Renesas Electronics successor to the original NEC RD8.2S, maintaining identical electrical specifications, package dimensions, and marking. The "(0)" suffix denotes revision compliance, and "T1" indicates tape-and-reel packaging-fully compatible with legacy designs and manufacturing processes.

What is the temperature coefficient of RD8.2S(0)-T1-AT, and how does it affect long-term voltage stability?

The RD8.2S(0)-T1-AT exhibits a Zener voltage temperature coefficient of approximately –0.03 %/°C near 8.2 V, as shown in Figure 9 of the datasheet. This negative drift means output voltage decreases by ~2.5 mV/°C rise, enabling predictable compensation in temperature-sensitive references when paired with positive-coefficient components.

RD8.2S(0)-T1-AT Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: SC-76, SOD-323

Packaging:: Bulk

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: -

Tolerance:: -

Power - Max:: -

Impedance (Max) (Zzt):: -

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 2-Super Mini Mold

RD8.2S(0)-T1-AT FAQ

1.How can I place an order for RD8.2S(0)-T1-AT through Aetrix?

Please submit a Request for Quotation (RFQ) for RD8.2S(0)-T1-AT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for RD8.2S(0)-T1-AT reliable?

The price and inventory of RD8.2S(0)-T1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD8.2S(0)-T1-AT is usually 5 days.

3.What payment methods are accepted for RD8.2S(0)-T1-AT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD8.2S(0)-T1-AT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RD8.2S(0)-T1-AT?

RD8.2S(0)-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RD8.2S(0)-T1-AT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for RD8.2S(0)-T1-AT?

For technical support, including RD8.2S(0)-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD8.2S(0)-T1-AT requirements.

6.How does Aetrix verify that RD8.2S(0)-T1-AT is sourced from the original manufacturer or authorized distributors?

All RD8.2S(0)-T1-AT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RD8.2S(0)-T1-AT meets industry standards.

7.What is the process for return or replacement of RD8.2S(0)-T1-AT?

All RD8.2S(0)-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with RD8.2S(0)-T1-AT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The RD8.2S(0)-T1-AT part is unused and in its original packaging.

Return procedure for RD8.2S(0)-T1-AT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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